Development of a Thermodynamically Froth Flotation System for Gold Recovery from Ores
Abstract
Gold production is very critical to national development. It supports socio- economic development of a nation; therefore there is a need for constant research in the area of enhancing its concentration in such a way to avoid environmental degradation and risk. A laboratory flotation machine for the recovery of gold from their ores was developed using thermodynamically froth design principles. The units and systems that constitute the machine are: cell unit of 5 litres water capacity, where pulp is contained and bubbles are generated; cell chassis, which consists of the frame base, frame stand and frame table which serves as support for different components-the motor, cell unit, and the shaft of froth flotation machine; agitation system (impeller), consists of impeller shaft screwed to the impeller disc for the purpose of agitating the pulp and reagents for proper conditioning; and control unit which consists of the speed controller, air regulator and air flow meter. Fabrication of the machine was carried using locally sourced materials by soldering and welding techniques. The machine was tested and the result was compared with similar imported standard machine. The results revealed gold recoverability difference of 3.45 % between the standard and the fabricated machine. The locally fabricated gold refinery, apart from its 70% cost savings, will enrich gold mining industries and promote foreign exchange earnings as well.
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